..C4d deposition can be assessed by either immunofluorescence (IF)- or immunoperoxidase (IP)-based methods. The use of methods varies considerably among institutions, but there are few data addressing their diagnostic equivalence...

Primary central nervous system vasculitis with prominent leptomeningeal enhancement: a subset with a benign outcome

..This study was undertaken to evaluate the clinical features and outcomes among patients with PCNSV who presented with prominent gadolinium meningeal enhancement on magnetic resonance imaging (MRI)...

..Angiography-negative PCNSV appears to be a distinct subtype of cerebral vasculitis with small vessel involvement beyond the resolution of conventional angiography and is associated with a favorable outcome...

..We report 2 unusual cases of acute allograft dysfunction that highlight the importance of caution in adopting an empiric strategy of profound immunosuppression in the absence of objective data to support graft rejection...

..They primarily affect males, arise predominantly in the left ventricle, are asymptomatic, may have nonspecific ECG findings, and rarely may be associated with sudden death. Microscopic findings in infants differ from older patients...

Clinical and histopathologic features of chordomas in children and young adults

..Recognition of this novel PTLD pattern as a potential imitator of acute rejection in particular is important because reduction of immunosuppression (to treat PTLD) is antithetical to the usual therapy for rejection...

..Idiopathic aortitis is a rare condition characterized by giant cell or lymphoplasmacytic inflammation of the aorta. The purpose of this study was to describe risk factors for the development of idiopathic aortitis...

Surgical pathology of atrial appendages removed during the cox-maze procedure: a review of 86 cases (2004 to 2005) with implications for prognosis

..Their importance lies not only in the fact that they can mimic true neoplastic lesions but also that they can, of their own accord, produce obstructions, arrhythmias, embolization, heart failure, and sudden death...

..Vascular abnormalities are a well-recognized manifestation of NF-I. The purpose of this study is to review the spectrum, management, and clinical outcome of patients with vascular abnormalities and NF-I...